CN104345529B - Image projecting equipment and control method - Google Patents
Image projecting equipment and control method Download PDFInfo
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- CN104345529B CN104345529B CN201410539496.XA CN201410539496A CN104345529B CN 104345529 B CN104345529 B CN 104345529B CN 201410539496 A CN201410539496 A CN 201410539496A CN 104345529 B CN104345529 B CN 104345529B
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- voltage
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- light source
- down operation
- cooling fan
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2026—Gas discharge type light sources, e.g. arcs
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
A kind of image projecting equipment, comprising: light source, and wherein luminescent material comes luminous by the electric discharge between electrode; Image-generating unit, modulates the intensity of the light launched from light source to form image; For cooling the cooling fan of light source; Input block, receives the command signal for cutting off image projecting equipment power supply of input; Voltage-level detector, detects the magnitude of voltage lighting time source; Magnitude of voltage determining unit, when input block receives command signal, determines whether the magnitude of voltage detected by voltage-level detector is less than predetermined threshold value; And cooling fan controller, when magnitude of voltage determining unit determine magnitude of voltage be less than described threshold value time, carry out drive cooling fan cooling light source cooling down operation.
Description
Technical field
The present invention relates to the image projecting equipment of projected image and the control method of image projecting equipment.
Background technology
Usually, in the high-pressure mercury-vapor lamp being widely used as projector light source, utilization is arranged on the arc discharge between the pair of electrodes in electric arc tube, to make the mercury vapour (luminescent material) being included in electric arc tube inside luminous.After the dump of projector when mercury vapour returns liquid, there is such situation: liquid mercury adheres to this to electrode when returning, thus causes short circuit (shunting) in-between the electrodes.This phenomenon is called " mercury bridge ", and the lamp of projector can be caused not light.
Produce mercury bridge to be caused by two characteristics, these two characteristics are: liquid mercury easily adheres to the position of low temperature; And electrode part is easier than lamp tube (luminotron) changes temperature, after the dump of projector, the temperature of electrode part easily becomes lower than the temperature of lamp tube.Especially, due to the correlativity between electrode temperature and lamp power (being fed to the power of electrode), when the power supply of projector cuts off from the state that lamp power is low, the temperature difference between electrode part and lamp tube becomes large, so the possibility that mercury bridge occurs sharply increases.
In addition, known the technology having and carry out rear cooling down operation, this technology is: after the dump of projector, and lamp keeps the cooling certain hour cycle, makes having a narrow range of temperature between electrode and lamp tube, and thus the possibility of mercury bridge appearance is low.Such as, Jap.P. 4070420 discloses a kind of technology, when cutting off projector power supply, cuts off the electricity supply after lamp power is remained on the low-level certain hour cycle, to prevent water silver bridge.
But, in Jap.P. 4070420, because prevent mercury bridge by reducing lamp power, so after the operation of cutting off the electricity supply, the temperature of lamp tube is dropped to the boiling point being equal to or less than mercury, the mercury of liquefaction in lamp tube, so, to the problem that closedown lamp will take a long time after there is dump.
Therefore, need to shorten and close lamp required time and prevent the image projecting equipment of mercury bridge and control method thereof and computer-readable recording medium.
Summary of the invention
The object of the present invention solves Problems existing in conventional art at least in part.
According to an embodiment, provide a kind of image projecting equipment, it comprises light source, and wherein luminescent material is by the Discharge illuminating between electrode; Image-generating unit, modulates the intensity of the light launched from light source, to form image; Cooling fan, for cooling light source; Input block, receives the command signal for cutting off image projecting equipment power supply of input; Voltage-level detector, detects the magnitude of voltage lighting time source; Magnitude of voltage determining unit, when input block receives command signal, determines whether the magnitude of voltage detected by voltage-level detector is less than predetermined threshold value; And cooling fan controller, when magnitude of voltage determining unit determine magnitude of voltage be less than described threshold value time, carry out drive cooling fan cooling light source cooling down operation.
According to another embodiment, provide a kind of control method of carrying out in image projecting equipment, described image projecting equipment comprises: light source, and wherein luminescent material is by the Discharge illuminating between electrode; Image-generating unit, modulates the intensity of the light launched from light source, to form image; And cooling fan, for cooling light source.Control method comprises: the command signal for cutting off image projecting equipment power supply receiving input; Magnitude of voltage when detection light source is lighted; When receiving command signal, determine whether the magnitude of voltage detected is less than default threshold value; And, when determining magnitude of voltage and being less than described threshold value, carry out the rear cooling down operation driving cooling fan cooling light source.
Read the following detailed description of the current preferred embodiment of the present invention by reference to the accompanying drawings, above-mentioned and other object, feature, advantage and the technology that the present invention may be better understood and industry meaning.
Accompanying drawing explanation
Fig. 1 is the skeleton view of the projector according to an embodiment.
Fig. 2 is the side view of the projector according to this embodiment.
Fig. 3 is the internal view of optical devices set by the projector of this embodiment and light supply apparatus.
Fig. 4 is the skeleton view of optical devices set by the projector of this embodiment and light supply apparatus.
Fig. 5 is the cut-open view of the high-pressure mercury-vapor lamp according to this embodiment.
Fig. 6 represents the example of the electrode of conventional projector and the temperature-time of each change of lamp tube.
Fig. 7 represents another example of the electrode of conventional projection and the temperature-time of each change of lamp tube.
Fig. 8 is the block diagram of the projector hardware configuration example according to this embodiment.
Fig. 9 is the process flow diagram of the projector light source rupturing operation example according to this embodiment.
Embodiment
Explain the embodiment according to image projecting equipment of the present invention and control method and program with reference to the accompanying drawings in detail.
Fig. 1 is the skeleton view as the projector 1 according to this embodiment image projecting equipment.Fig. 2 is the side view of projector 1.Here, Fig. 2 represent from the projecting lens 10 of projector 1 irradiate projected light to as receive projection surface screen 2 state.
Fig. 3 is the internal view of optical devices 3 set by projector 1 and light supply apparatus 4.Fig. 4 is the skeleton view of optical devices 3 set by projector 1 and light supply apparatus 4.
Optical devices 3 shown in Fig. 3 and 4 are provided with lighting mechanism 3a and projection structure 3b.Optical devices 3 are also provided with colour wheel 5, optical channel 6, relay lens 7, level crossing 8, concave mirror 9 and image-generating unit 11.
Colour wheel 5 is disk like, the white light conversion from light supply apparatus 4 is become the light of each RGB color of time per unit, and by the illumination of conversion to optical channel 6.
Optical channel 6 forms tubulose by being put together by sheet glass, and by the photoconduction that irradiates from colour wheel 5 to relay lens 7.
Relay lens 7 is formed by combination at least two lens, assembles the light irradiated from optical channel 6, corrects the axial chromatic aberration of irradiating light simultaneously.
Level crossing 8 and concave mirror 9 reflect the light irradiated from relay lens 7, and assemble the light irradiated from relay lens 7, guiding image-generating unit 11.
Image-generating unit 11 utilizes DMD element to form, and DMD has the rectangular mirror surface formed by multiple micro mirror, and by driving micro mirror independently in a time division manner based on the data of picture and image, process and reflective projection light are to form predetermined image data.
The high-pressure mercury-vapor lamp will explained after light supply apparatus 4 is provided with is as light source.Light supply apparatus 4 irradiates white light towards the lighting mechanism 3a of optical devices 3.In lighting mechanism 3a, the white light irradiated is dispersed into RGB and the image-generating unit 11 that leads from light supply apparatus 4.Then, image-generating unit 11 modulates the intensity of the light irradiated from light supply apparatus 4, to form image.The image formed by image-generating unit 11 is amplified by projector mechanism 3b and projects on the screen 2.Although form image-generating unit 11 by DMD element in the present embodiment, this structure is not limited thereto, and such as, image-generating unit 11 can be formed by liquid crystal light valve.In essence, only need image-generating unit 11 to comprise the intensity of the light that modulation is irradiated from light supply apparatus 4 to form the function of image, the type of image-generating unit 11 can change arbitrarily.
On the upside of the vertical direction of image-generating unit 11 shown in Fig. 3, that is, neighbouring side, is provided with the idle light flat board (OFF-lightplate) receiving unnecessary light, unnecessaryly only incides the light being not used as projected light in the light of image-generating unit 11.When light is incident, image-generating unit 11 operates multiple micro mirror based on image data in a time division manner according to the function of DMD element, by micro mirror will light reflex to projecting lens 10, and the light that will abandon reflexes to idle light flat board.The light being used for projected image is reflexed to projector mechanism 3b by image-generating unit 11.The light reflexing to projector mechanism 3b is amplified by multiple projecting lens 10 and is projected into image light.
Next, the high-pressure mercury-vapor lamp 30 of the light source being used as light supply apparatus 4 is explained.Fig. 5 is the cut-open view that light supply apparatus 4 is used as the high-pressure mercury-vapor lamp 30 of light source.
High-pressure mercury-vapor lamp 30 shown in Fig. 5 is provided with lamp tube 31, mercury 32, pair of electrodes 33 and reverberator 34, and it is inner that mercury 32 is included in fluorescent tube 31 in a high voltage state, and as luminescent material, it is inner that pair of electrodes 33 is arranged on lamp tube 31.Mercury 32 is luminous owing to discharging between electrode 33, makes high-pressure mercury-vapor lamp 30 have light source effect.
Do below and explain more specifically.This is such as formed by tungsten electrode 33.When applying high pressure between electrode 33, form arc discharge, owing to interacting with the mercury 32 being included in lamp tube 31 inside in a high voltage state, occur bright line-spectra and continuous spectrum, thus produce light.The light launched from lamp tube 31 to be reflected by reverberator 34 and to converge to set point.Inner at lamp tube 31, except mercury, comprise starter (starter) inert gas and other halogen.When this to electrode 33 be liquefied mercury 32 connect (shunting) there is mercury bridge time, can not voltage be applied between electrode 33, thus can not form arc discharge, cause lighting failure.When distance between electrode 33 shortens, mercury 32 is connecting electrode 33 easily, thus increases the possibility of mercury bridge appearance.Because modulating voltage depends on the distance between electrode 33, so the distance between electrode 33 is shorter, modulating voltage is lower.
Here, in high-pressure mercury-vapor lamp 30 ignition, according to halogen cycle effect, usually, the distance between electrode 33 is elongated and shorten repeatedly.And the distance between electrode 33 is the shortest in the incipient stage in high-pressure mercury-vapor lamp 30 life-span, in long-time, the distance between electrode 33 is elongated gradually along with the life consumption of high-pressure mercury-vapor lamp 30.Therefore, in the incipient stage in high-pressure mercury-vapor lamp 30 life-span, mercury bridge the most easily occurs.Therefore, in the incipient stage in high-pressure mercury-vapor lamp 30 life-span, need process mercury bridge.
Here, assuming that in conventional projector above-mentioned high-pressure mercury-vapor lamp 30 be used as light source.When Fig. 6 represents that (after stopping powering to projector) does not carry out rear cooling down operation after the dump of projector, the temperature-time of each the change example of electrode 33 and lamp tube 31.In figure 6, transverse axis represents the time (t) of disappearance, and Z-axis represents temperature (DEG C).In Fig. 6, curve P1 represents the temperature-time change of electrode 33, the temperature-time change of curve Q1 indication lamp tube portion 31.
As shown in Figure 6, time (the time point t after the dump of projector
0), the temperature T of electrode 33
1apparently higher than the temperature T of lamp tube 31
2.But because the specific heat of electrode 33 (specificheat) is lower than the specific heat of lamp tube 31, electrode 33 is easier than lamp tube 31 reduces temperature.Therefore, electrode 33 is at time point t
1identical temperature T is reached with lamp tube 31
3.At time point t
1afterwards, the temperature of electrode 33 drops under the temperature of lamp tube 31, and along with past of time, the temperature difference is between the two larger.As time point t
1when mercury 32 starts to return liquid state afterwards, because the temperature of electrode 33 is lower than the temperature of lamp tube 31, mercury 32 easily adheres on electrode 33, thus the possibility that mercury bridge occurs increases.
Fig. 7 represents when to carry out rear cooling down operation after the dump of projector, the temperature-time of each the change example of electrode 33 and lamp tube 31.In the figure 7, transverse axis represents the time (t) of disappearance, and Z-axis represents temperature (DEG C).In Fig. 7, curve P2 represents the temperature-time change of electrode 33, the temperature-time change of curve Q2 indication lamp tube portion 31.
As shown in Figure 7, when carrying out rear cooling down operation after the dump of projector, compared with not carrying out the situation of rear cooling down operation in Fig. 6, the temperature T of lamp tube 31
4rapid decline.Comparatively speaking, because the temperature of electrode 33 is large by the impact of rear cooling down operation not as the temperature of lamp tube 31 by the impact of rear cooling down operation, so compared with the situation of not carrying out rear cooling down operation with Fig. 6, reduction of speed degree aspect is almost constant at temperature for the temperature of electrode 33.Therefore, the time point t that puts upside down of the temperature of electrode 33 and lamp tube 31
2than the time point t in Fig. 6
1in evening, the temperature of electrode 33 shortened lower than the time cycle of the temperature of lamp tube 31.In other words, by cooling down operation after carrying out after the dump of projector, the possibility that mercury bridge occurs can be reduced.
When the command signal input of projector 1 dump received in the present embodiment, detect the magnitude of voltage of high-pressure mercury-vapor lamp 30 ignition mesohigh mercury vapor lamp, carry out the rear cooling down operation of the cooling high-pressure mercury-vapor lamp 30 of predetermined period of time.In other words because the distance between electrode 33 and between the electrode 33 of high-pressure mercury-vapor lamp 30 voltage (modulating voltage) relevant, so by detecting the distance that modulating voltage can be estimated between electrode 33 indirectly.In order to prevent the distance between the electrode 33 in the present embodiment from occurring mercury bridge in short-term, after high-pressure mercury-vapor lamp 30 is closed, carry out rear cooling down operation with cooling fan.Therefore, it is possible to shorten the time of closing needed for high-pressure mercury-vapor lamp 30, prevent mercury bridge.
Fig. 8 is the block diagram of the necessary hardware configuration of bottom line realizing projector 1 required for the present invention.As shown in Figure 8, projector 1 be provided with image-generating unit 11, high-pressure mercury-vapor lamp 30, cooling fan 40, power knob 50, modulating voltage detecting device 60, service time detecting device 70, record cell 80 and control device 90.
Image-generating unit 11 modulates the light intensity of irradiating from high-pressure mercury-vapor lamp 30 (light supply apparatus 4), to form above-mentioned image.The image formed by image-generating unit 11 is projected mechanism 3b (not shown in fig. 8) and amplifies and be projected on screen 2 (not shown).
High-pressure mercury-vapor lamp 30 is light sources, and wherein as mentioned above, the electric discharge between electrode 33 makes mercury 32 luminous.
Cooling fan 40 is fans of cooling high-pressure mercury-vapor lamp 30, and is driven under the control of control device 90.
Power knob 50 is the operating means whether order powers to projector 1.Power knob 50 receives command signal input, stops powering to projector 1 by outside pressing.In the present embodiment, power knob 50 is used as input block.
Modulating voltage detecting device 60 detects the modulating voltage of high-pressure mercury-vapor lamp when lighting high-pressure mercury-vapor lamp 30, and testing result is outputted to control device 90.
Service time, detecting device 70 detected the service time of high-pressure mercury-vapor lamp 30, and testing result is outputted to control device 90.Specifically, service time, detecting device 70 detected the service time bringing into use high-pressure mercury-vapor lamp 30.
Record cell 80 records and drives the set information of lamp power of high-pressure mercury-vapor lamp 30 and the time of the rear cooling down operation of cooling fan 40, based on the time of cooling down operation after the voltage value that lamp power and modulating voltage detecting device 60 detect.In addition, record cell 80 records the various programs, form etc. that drive projector 1.Here, the maximal value of the set information indication lamp power of lamp power and the step of lamp power wide between corresponding relation.Walking wide is set-point, determines whether each of multiple power modes for arranging in projector 1 reduces from lamp power maximal value with this set-point.
Control device 90 controls the whole operation of projector 1 completely.Control device 90 is provided with receiving element 91, power-supply controller of electric 92, magnitude of voltage determining unit 93, rear cooling down operation time setting unit 94 and cooling fan processor 95.
Receiving element 91 receives the command signal inputted from power knob 50.
Power-supply controller of electric 92 controls to the power supply of projector 1 according to the command signal inputted from power knob 50.Such as, when the command signal of cutting off the electricity supply inputs from power knob 50 via receiving element 91, power-supply controller of electric 92 carries out the control stopping powering to projector 1.
When the command signal cutting off projector 1 power supply inputs from power knob 50, magnitude of voltage determining unit 93 determines whether the magnitude of voltage detected by modulating voltage detecting device 60 is less than predetermined threshold.Here, according to the possibility setting threshold value that the Distance geometry mercury bridge between the electrode 33 of high-pressure mercury-vapor lamp 30 occurs.
When the command signal cutting off projector 1 power supply inputs from power knob 50, the magnitude of voltage that setting value and modulating voltage detecting device 60 based on the lamp power of record in record cell 80 detect, rear cooling down operation time setting unit 94 sets the rear cooling down operation time.
The driving of cooling fan controller 95 controlled cooling model fan 40.Specifically, when receiving element 91 receives from power knob 50 command signal cutting off projector 1 power supply, cooling fan controller 95 drives cooling fan 40 to carry out rear cooling down operation.When magnitude of voltage determining unit 93 determines that magnitude of voltage is less than threshold value, cooling fan controller 95 drives cooling fan 40 to carry out rear cooling down operation.
Although by the computer installation formation control device 90 being provided with CPU, ROM, RAM etc. in the present embodiment, when performing the program of the middle storages such as ROM as CPU, realize the various functions of receiving element 91, power-supply controller of electric 92, magnitude of voltage determining unit 93 and cooling fan controller 95, but this structure is not limited thereto.Such as, by special hardware circuit, at least part of function of receiving element 91, power-supply controller of electric 92, magnitude of voltage determining unit 93, rear cooling down operation time setting unit 94 and the various function of cooling fan controller 95 can be realized.
The program performed by control device 90 can be provided by the formatted file installed be stored in computer-readable medium or executable format file, and wherein computer-readable medium is all if any CD-ROM, floppy disk (FC), CD-R and Digital video disc (DVD).And, provide on the computing machine that the program performed by control device 90 can be stored in interconnection network such as internet and via web download.In addition, the program performed by control device 90 can provide via network such as internet or issue.
Next, explain with reference to Fig. 9 the operation example that projector 1 is cut off the electricity supply.Fig. 9 is the process flow diagram of the operation example cutting off projector 1 power supply.
As shown in Figure 9, first user presses power knob 50.Then, when power knob 50 is pressed, cooling fan controller 95 obtains the setting value (step S101) of lamp power setting from record cell 80.Cooling fan controller 95 obtains modulating voltage when high-pressure mercury-vapor lamp 30 is lighted, and this modulating voltage is detected (step S102) by modulating voltage detecting device 60.
Next, magnitude of voltage determining unit 93 determines whether the modulating voltage detected by modulating voltage detecting device 60 is less than threshold value (S103).When magnitude of voltage determining unit 93 determines that the modulating voltage detected by modulating voltage detecting device 60 is less than threshold value (step S103 is yes), the step S104 that will explain after projector 1 moves on to.On the other hand, when magnitude of voltage determining unit 93 determines that the modulating voltage detected by modulating voltage detecting device 60 is not less than threshold value (step S103 is no), the step S108 that will explain after projector 1 moves on to.
In step S104, based on the lamp performance number obtained from record cell 80 and the magnitude of voltage obtained from modulating voltage detecting device 60, in the table of the rear cooling down operation that rear cooling down operation time setting unit 94 records from record cell 80, set the rear cooling down operation time of high-pressure mercury-vapor lamp 30.
Then, power-supply controller of electric 92 stops powering to high-pressure mercury-vapor lamp 30, closes high-pressure mercury-vapor lamp 30 (step S105).
Then, cooling fan controller 95 drives cooling fan 40 according to the rear cooling down operation time obtained from record cell 80, performs rear cooling down operation (step S106) to high-pressure mercury-vapor lamp 30.Therefore, even if the distance between the electrode 33 of high-pressure mercury-vapor lamp 30 shortens, there is the high likelihood causing mercury bridge, also can reduce rapidly the temperature of lamp tube 31, thus prevent mercury bridge.
After rear cooling down operation, power-supply controller of electric 92 stops powering to the unit of projector, cuts off the power supply (step S107) of projector 1.After step S107, projector 1 ends process.
In step S108, power-supply controller of electric 92 stops powering to high-pressure mercury-vapor lamp 30, closes high-pressure mercury-vapor lamp 30.After step S108, projector 1 moves on to step S107.
According to above-described embodiment, when magnitude of voltage determining unit 93 determines that voltage is less than threshold value, cooling fan controller 95 drives cooling fan 40 to carry out rear cooling down operation.Thereby, it is possible to shorten the time of closing needed for lamp, thus prevent mercury bridge.
In the present embodiment, compared with when lighting high-pressure mercury-vapor lamp 30, cooling fan controller 95 can increase the revolution of cooling fan 40 in rear cooling down operation.Therefore, it is possible to the cooling down operation time after shortening.
In the present embodiment, the modulating voltage of high-pressure mercury-vapor lamp 30 uprises in life-span final stage, the possibility step-down that mercury bridge occurs.Therefore, when exceeding the schedule time, such as, corresponding to the time of life-span final stage, cooling fan controller 95 can not carry out rear cooling down operation service time detected by detecting device 70 service time.Therefore, it is possible to prevent the fault of the lamp voltage value error-detecting of modulating voltage detecting device 60.
In the present embodiment, due to the individual difference of high-pressure mercury-vapor lamp 30, there is change in the relation between the distance between modulating voltage and electrode 33.Therefore, based on bringing into use the magnitude of voltage detected by modulating voltage detecting device 60 when the magnitude of voltage and closedown high-pressure mercury-vapor lamp 30 that are detected by modulating voltage detecting device 60 during projector 1, rear cooling down operation time setting unit 94 can set the rear cooling down operation time.In this case, the time that cooling fan sets according to rear cooling down operation time setting unit 94 carries out rear cooling down operation.Therefore, it is possible to suppress the fault that the variable owing to starting can cause as parameter.
According to the present embodiment, the time of closing needed for lamp can be shortened, thus prevent mercury bridge.
Although in order to complete and clearly open and describe the present invention by specific embodiment, but, therefore appended claim should not be restricted, please note, claim should be interpreted as comprising all modification and replaceable structure that those skilled in the art easily expect, these modification and replaceable structure fall within basic instruction set forth herein completely.
Claims (4)
1. an image projecting equipment, comprising:
Light source, wherein luminescent material is by the Discharge illuminating between electrode;
Image-generating unit, modulates the intensity of the light launched from light source, to form image;
Cooling fan, for cooling light source;
Input block, receives the command signal for cutting off image projecting equipment power supply of input;
Voltage-level detector, detects the magnitude of voltage lighting time source;
Magnitude of voltage determining unit, when input block receives command signal, determines whether the magnitude of voltage detected by voltage-level detector is less than predetermined threshold value;
Cooling fan controller, when magnitude of voltage determining unit determine magnitude of voltage be less than described threshold value time, carry out drive cooling fan cooling light source rear cooling down operation; With
Rear cooling down operation time setting unit, based on the magnitude of voltage detected by voltage-level detector when bringing into use image projecting equipment and the magnitude of voltage detected by voltage-level detector when closing light source, the time cycle of rear cooling down operation is carried out in setting,
Wherein, the time cycle that cooling fan controller sets according to rear cooling down operation time setting unit, rear cooling down operation is carried out.
2. image projecting equipment as claimed in claim 1, wherein, compared with the revolution of cooling fan during light source igniting, the revolution of the cooling fan after cooling fan controller increases during cooling down operation.
3. image projecting equipment as claimed in claim 1, also comprises detecting device service time, the service time of detection light source,
Wherein, when the service time that in use, detecting device detects exceedes the schedule time, cooling fan controller does not carry out rear cooling down operation.
4. a control method of carrying out in image projecting equipment, described image projecting equipment comprises: light source, and wherein luminescent material is by the Discharge illuminating between electrode; Image-generating unit, modulates the intensity of the light launched from light source, to form image; And cooling fan, for cooling light source, this control method comprises:
Receive the command signal for cutting off image projecting equipment power supply of input;
Magnitude of voltage when detection light source is lighted;
When receiving command signal, determine whether the magnitude of voltage detected is less than default threshold value; With
When determining magnitude of voltage and being less than described threshold value, based on the magnitude of voltage detected when bringing into use image projecting equipment and the magnitude of voltage detected when closing light source, the time cycle of rear cooling down operation is carried out in setting, further, carry out according to this time cycle the rear cooling down operation driving cooling fan cooling light source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013153004A JP6191304B2 (en) | 2013-07-23 | 2013-07-23 | Image projection apparatus, control method, and program |
| JP2013-153004 | 2013-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104345529A CN104345529A (en) | 2015-02-11 |
| CN104345529B true CN104345529B (en) | 2016-04-06 |
Family
ID=51063295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410539496.XA Expired - Fee Related CN104345529B (en) | 2013-07-23 | 2014-07-18 | Image projecting equipment and control method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9429827B2 (en) |
| EP (1) | EP2829913B1 (en) |
| JP (1) | JP6191304B2 (en) |
| CN (1) | CN104345529B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD735791S1 (en) * | 2013-01-08 | 2015-08-04 | Ricoh Company, Ltd. | Projector |
| CN106210686A (en) * | 2016-09-21 | 2016-12-07 | 成都创慧科达科技有限公司 | A kind of projector equipment possessing voice control function |
| JP2020201303A (en) | 2019-06-06 | 2020-12-17 | セイコーエプソン株式会社 | projector |
| JP2020201426A (en) * | 2019-06-12 | 2020-12-17 | セイコーエプソン株式会社 | projector |
| JP6919689B2 (en) * | 2019-09-20 | 2021-08-18 | セイコーエプソン株式会社 | projector |
| JP7358978B2 (en) * | 2019-12-25 | 2023-10-11 | セイコーエプソン株式会社 | projector |
| CN111650806A (en) * | 2020-06-18 | 2020-09-11 | 东莞市豪铖电子科技有限公司 | Method and device for preventing eyes of robot projector from being burnt |
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| WO2006064963A1 (en) * | 2004-12-17 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | High-pressure mercury lamp, lamp unit, and image display apparatus |
| JP2007059281A (en) * | 2005-08-26 | 2007-03-08 | Matsushita Electric Works Ltd | High-pressure discharge lamp lighting device and image display device |
| WO2005104183A3 (en) * | 2004-04-21 | 2009-03-19 | Philips Intellectual Property | Lighting unit |
| EP1416518A3 (en) * | 2002-10-30 | 2009-07-01 | General Electric Company | Short arc high intensity mercury discharge lamp |
| EP2197250A1 (en) * | 2007-09-27 | 2010-06-16 | Iwasaki Electric Co., Ltd | High-voltage discharge lamp lighting apparatus, high-voltage discharge lamp lighting method, and projector |
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| JP2903655B2 (en) * | 1990-06-21 | 1999-06-07 | セイコーエプソン株式会社 | Projection display device |
| JPH10302976A (en) * | 1997-04-30 | 1998-11-13 | Toshiba Lighting & Technol Corp | Lighting device for high voltage discharge lamp |
| JP4070420B2 (en) | 2001-03-23 | 2008-04-02 | フェニックス電機株式会社 | Ultra high pressure discharge lamp lighting method and lighting device |
| JP3852307B2 (en) | 2001-07-13 | 2006-11-29 | ウシオ電機株式会社 | Light source device |
| JP4812483B2 (en) * | 2006-03-23 | 2011-11-09 | 三洋電機株式会社 | Projection display device |
| JP5180179B2 (en) * | 2009-12-14 | 2013-04-10 | パナソニック株式会社 | High pressure discharge lamp lighting device, high pressure discharge lamp device using the same, projector using the high pressure discharge lamp device, and method for lighting the high pressure discharge lamp |
| JP5786335B2 (en) * | 2011-01-11 | 2015-09-30 | セイコーエプソン株式会社 | projector |
| JP2013117630A (en) * | 2011-12-02 | 2013-06-13 | Sanyo Electric Co Ltd | Projection type video display device |
| JP6155594B2 (en) | 2012-10-17 | 2017-07-05 | 株式会社リコー | Image projection apparatus, control method, and program |
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2013
- 2013-07-23 JP JP2013153004A patent/JP6191304B2/en not_active Expired - Fee Related
-
2014
- 2014-06-25 US US14/314,086 patent/US9429827B2/en not_active Expired - Fee Related
- 2014-07-01 EP EP14175232.9A patent/EP2829913B1/en not_active Not-in-force
- 2014-07-18 CN CN201410539496.XA patent/CN104345529B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003017280A (en) * | 2001-06-27 | 2003-01-17 | Matsushita Electric Ind Co Ltd | Ignition device of high-pressure discharge lamp |
| EP1416518A3 (en) * | 2002-10-30 | 2009-07-01 | General Electric Company | Short arc high intensity mercury discharge lamp |
| WO2005104183A3 (en) * | 2004-04-21 | 2009-03-19 | Philips Intellectual Property | Lighting unit |
| WO2006064963A1 (en) * | 2004-12-17 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | High-pressure mercury lamp, lamp unit, and image display apparatus |
| JP2007059281A (en) * | 2005-08-26 | 2007-03-08 | Matsushita Electric Works Ltd | High-pressure discharge lamp lighting device and image display device |
| EP2197250A1 (en) * | 2007-09-27 | 2010-06-16 | Iwasaki Electric Co., Ltd | High-voltage discharge lamp lighting apparatus, high-voltage discharge lamp lighting method, and projector |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2829913A3 (en) | 2015-04-01 |
| EP2829913A2 (en) | 2015-01-28 |
| US9429827B2 (en) | 2016-08-30 |
| CN104345529A (en) | 2015-02-11 |
| JP2015022286A (en) | 2015-02-02 |
| EP2829913B1 (en) | 2018-02-21 |
| JP6191304B2 (en) | 2017-09-06 |
| US20150029469A1 (en) | 2015-01-29 |
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